Henry Holt 6 Co. 



Sedgwick & Wilson's General Biology. PART I. 



By WILLIAM T. SEDGWICK, Professor in the Massachusetts Institute 

 of Technology, and EDMUND B. WILSON, Professor in Columbia 

 College, viii -f J 93 PP- 8vo. 



This work is intended for college and university students 

 as an introduction to the theoretical and practical study of 

 biology. It discusses broadly some of the leading principles 

 of the science on the substantial basis of a thorough examina- 

 tion of two typical forms, a fern and an earthworm, 



Bessey's Botany. ADVANCED COURSE. 



By CHARLES E. BESSEY, Professor in the University of Nebraska. 

 x -f- 611 pp. 8vo. 



This manual offers a general survey of vegetable life, 

 adapted to higher rollegiate work. The first 200 pages give a 

 comprehensive account of the general anatomy and physiology 

 of plants, proceeding from the simplest to the most complex 

 in structure. Then comes classification, with a systematic 

 examination, in some detail, of all the orders. The presenta- 

 tion of matter is such as to fit the book for constant use in 

 the laboratory, the text supplying the outline sketch which 

 the student is to fill in by the aid of scalpel and microscope. 



Bessey's Essentials of Botany. BRIEFER COURSE. 



xlii-l-292 pp. i2mo. 



A guide to beginners. Its principles are, that the true aim 

 of botanical study is not so much to seek the family and 

 proper names of specimens as to ascertain the laws of plant- 

 structure and plant-life ; that this can be done only by 

 examining and dissecting the plants themselves ; and that it 

 is best to confine the attention to a few leading types, and to 

 take up first the simpler and more easily understood forms, 

 and afterwards those whose structure and functions are more 

 complex. The work contains a chapter on the gross anatomv 

 of flowering plants. 



